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<div class=styleBackground103><img src="./background103.png" width="633" height="800" border="0" alt=""></div>
<div class=ts103p0><span class="ft0p103"> </span></div>
<div class=ts103p1><span class="ft0p103">Gravitybox Schedule Primer<span class="ft1p103"> </span></span></div>
<div class=ts103p3><span class="ft0p103">Page 101&nbsp; </span></div>
<div class=ts103p7><span class="ft2p103"> </span></div>
<div class=ts103p8><span class="ft3p103"> </span></div>
<div class=ts103p9><span class="ft4p103">1998&#45;2004 Gravitybox Software LLC<span class="ft3p103"> </span></span></div>
<div class=ts103p13><span class="ft5p103">Chapter 11 </span></div>
<div class=ts103p15><span class="ft6p103">Recurring Appointments </span></div>
<div class=ts103p17><span class="ft7p103">In addition to scheduling single ungrouped appointments, a </span></div>
<div class=ts103p18><span class="ft7p103">group of them may also be added. Appointments in a group </span></div>
<div class=ts103p20><span class="ft7p103">are related in that they have the same GroupId, but the </span></div>
<div class=ts103p21><span class="ft7p103">properties of each may be manipulated separately. When an appointment is created, it </span></div>
<div class=ts103p22><span class="ft7p103">is assigned a unique GroupId. To determine the number of appointments in any group, </span></div>
<div class=ts103p23><span class="ft7p103">you may use the GroupCount method of the ScheduleItems collection. Given a GroupId, </span></div>
<div class=ts103p25><span class="ft7p103">it returns the number of appointments with a matching GroupId. You may </span></div>
<div class=ts103p26><span class="ft7p103">programmatically add recurrences with the AddRecurrence method of the </span></div>
<div class=ts103p27><span class="ft7p103">ScheduleItems collection. Given an existing appointment and a &#147;Recurrence&#148; object. </span></div>
<div class=ts103p29><span class="ft7p103">The proper number of recurring appointments will be added to the ScheduleItems </span></div>
<div class=ts103p30><span class="ft7p103">collection. In addition to adding recurrences with code there is a provided UI. The </span></div>
<div class=ts103p31><span class="ft7p103">default UI uses the &#147;ScheduleRecurrence&#148; control. You may wish to not use the default </span></div>
<div class=ts103p33><span class="ft7p103">dialog and instead use this control to create your own dialog for this functionality. </span></div>
<div class=ts103p35><span class="ft7p103"> </span></div>
<div class=ts103p36><span class="ft7p103">A recurrence object provides all of the necessary information to build a recurrence </span></div>
<div class=ts103p37><span class="ft7p103">pattern. A recurrence pattern may be organized in many different ways. This object has </span></div>
<div class=ts103p39><span class="ft7p103">a StartDate that defines the starting date of the recurring pattern. In addition the pattern </span></div>
<div class=ts103p40><span class="ft7p103">may end in any of three ways. (1) The recurrence may never end, (2) end after a certain </span></div>
<div class=ts103p41><span class="ft7p103">number of occurrences, or (3) end at a specified date. The recurrence interval may be </span></div>
<div class=ts103p43><span class="ft7p103">daily, weekly, or monthly. Each recurrence interval has a specified object that stores the </span></div>
<div class=ts103p44><span class="ft7p103">parameters for its particular setup. </span></div>
<div class=ts103p46><span class="ft7p103"> </span></div>
<div class=ts103p47><span class="ft6p103">RecurrenceDay </span></div>
<div class=ts103p49><span class="ft7p103">If the recurrence is daily, the Recurrence object&#146;s &#147;RecurrenceDay&#148; object will contain </span></div>
<div class=ts103p51><span class="ft7p103">the needed information to create the recurrence pattern. This object has two properties: </span></div>
<div class=ts103p52><span class="ft7p103">DayInterval and RecurrenceMode. The day interval is the number of days to skip before </span></div>
<div class=ts103p53><span class="ft7p103">creating another occurrence. For example, if you wish to create a recurring appointment </span></div>
<div class=ts103p55><span class="ft7p103">every day then this property would be set to &#147;1&#148;. This indicates that each appointment is </span></div>
<div class=ts103p56><span class="ft7p103">one day from the last one. The RecurrenceMode property may be set to one of two </span></div>
<div class=ts103p57><span class="ft7p103">property values. The above example used the &#147;DayInterval&#148; setting, where you specify </span></div>
<div class=ts103p59><span class="ft7p103">the interval to separate the days. The other property value is &#147;Weekdays&#148;. This will </span></div>
<div class=ts103p60><span class="ft7p103">create the recurrence every weekday. </span></div>
<div class=ts103p62><span class="ft7p103"> </span></div>
<div class=ts103p63><span class="ft8p103">Quick Tip </span></div>
<div class=ts103p65><span class="ft9p103">A Recurrence is a grouping of two or </span></div>
<div class=ts103p66><span class="ft9p103">more appointments. </span></div>
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